Summary:

"Error loading operating system" error occurs when your computer's BIOS doesn't support the capacity of the hard disk where you install Windows 10 or not install properly. This article will tell you how to work around the "Error Loading Operating System" when starting up Windows 10.

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My windows 10 crashed yesterday when I restarted it after loading the logo, a message appeared saying that "error loading operating system". So I restarted it again, but it showed the same message and I can even not open the boot menu.

"Error loading operating system" with a black screen is an irritating problem that is often witnessed by users when they try to boot their Windows PC. The start-up issue generally occurs after the fresh installation of the Windows operating system. Moreover, sudden power failure, system crash, or system restart can also cause such error.
Reasons for Error Loading Operating System Problem

1). Computer hard disk failures

The main reason for computer "error loading operating system" issues can often be caused by computer hard disk failures. When people are trying to boot the desired PC, the computer often needs to read the operating system information stored on the plugged computer hard disk until the system is booted at last. However, when the hard disk is damaged somehow or the important operating system data are filled with bad sectors or physically corrupted, the computer cannot recognize the desired operating system information and make the computer operating system load unsuccessfully.

2). Computer hard disk MBR information is not right

Once the hard disk MBR information becomes incorrect, the common computer operating system loading during booting is also likely to be negatively affectedly or stopped.

3). Computer operating system gets problems

Some damaged boot files or configuration files of your computer OS can also lead to computer error loading operating system problems.

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